Bug#534274: [mdadm] mdadm fails to assemble raid array on boot with kernel > 2.6.26

[martin f krafft]

also sprach Lior Chen <liorc at lirtex.com> [2009.06.23.0810 +0200]:
> With kernels newer than 2.6.26-2 (I have tried both 2.6.29-2 and 2.6.30-1) 
> mdadm fails to assemble raid array on boot:
> 
> Assembling all MD arrays... md: md0 stopped
> mdadm: no devices found for /dev/md0
> Failure: failed to assemble all arrays.

Please look at
http://wiki.debian.org/InitramfsDebug#Savingdebuginformation and try
to provide as much information as you can about what happens between
the boot loader and the initramfs prompt.

> mdadm --create /dev/md0 --level=0 --raid-devices=2 /dev/sda2 /dev/sdb2
> or 
> mdadm -A /dev/md0 /dev/sda2 /dev/sdb2
> 
> it fails saying that /dev/sda2 and /dev/sdb2 are busy (mdadm: Cannot open 
> /dev/sda2: Device or resource busy).

It seems like som device mapper thing is getting in the way:

> in the initramfs shell:
> ls -l /dev/mapper :
> control
> isw_cjhfigcfig_LCRAID
> isw_cjhfigcfig_LCRAID1
> isw_cjhfigcfig_LCRAID2

I have no idea what that is, but a sneaking suspicion that
isw_cjhfigcfig_LCRAID2 is /dev/sd[ab]2.

Try to disable that.

-- 
 .''`.   martin f. krafft <madduck at d.o>      Related projects:
: :'  :  proud Debian developer               http://debiansystem.info
`. `'`   http://people.debian.org/~madduck    http://vcs-pkg.org
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